Explain types of Block in forms4.0?

1 Answer

Answer :

Base table Blocks.
Control Blocks.
1. A base table block is one that is associated with a specific database
table or view.
2. A control block is a block that is not associated with a database
table. ITEMS

Related questions

Description : What are the different types of Coordinations of the Master with the Detail block?

Last Answer : POPULATE_GROUP(function) POPULATE_GROUP_WITH_QUERY(function) SET_GROUP_CHAR_CELL(procedure) SET_GROUPCELL(procedure) SET_GROUP_NUMBER_CELL(procedure)

Description : Explain the difference between a data block, an extent and a segment.

Last Answer : A data block is the smallest unit of logical storage for a database object. As objects grow they take chunks of additional storage that are composed of contiguous data blocks. These groupings ... that an object takes when grouped together are considered the segment of the database object.

Description : Explain how procedures and functions are called in a PL/SQL block ?

Last Answer : Function is called as part of an expression. sal := calculate_sal ('a822'); procedure is called as a PL/SQL statement calculate_bonus ('A822');

Description : How to define data block size?

Last Answer : A data block size is specified for each Oracle database when the database is created. A database users and allocated free database space in Oracle data blocks. Block size is specified in init.ora file and cannot be changed latter.

Description : What is data block?

Last Answer : Oracle database's data is stored in data blocks. One data block corresponds to a specific number of bytes of physical database space on disk.

Description : Can object group have a block?

Last Answer : Yes , object group can have block as well as program units.

Description : What are the Various Block Coordination Properties

Last Answer : The various Block Coordination Properties are a) Immediate Default Setting. The Detail records are shown when the Master Record are shown. b) Deffered with Auto Query Oracle Forms defer fetching the ... No Auto Query The operator must navigate to the detail block and explicitly execute a query

Description : What are the components of a PL/SQL block ?

Last Answer : A set of related declarations and procedural statements is called block.

Description : What are the components of a PL/SQL Block ?

Last Answer : Declarative part, Executable part and Exception part.Datatypes PL/SQL

Description : List the system variables related in Block and Field?

Last Answer : 1. System.block_status 2. System.current_block 3. System.current_field 4. System.current_value 5. System.cursor_block 6. System.cursor_field 7. System.field_status.

Description : Committed block sometimes refer to a BASE TABLE ?

Last Answer : False

Description : What does an on-clear-block Trigger fire?

Last Answer : It fires just before SQL * forms the current block.

Description : What is Post-Block is a. ???

Last Answer : a. Navigational Trigger. b. Key trigger c. Transaction Trigger.

Description : Can we use GO-BLOCK package in a pre-field trigger ?

Last Answer : No

Description : Give the sequence in which triggers fired during insert operations, when the following 3 triggers are defined at the same block level ?

Last Answer : a. ON-INSERT b. POST-INSERT c. PRE-INSERT

Description : How does Space allocation table place within a block ?

Last Answer : Each block contains entries as follows Fixed block header Variable block header Row Header,row date (multiple rows may exists) PCTEREE (% of free space for row updation in future)

Description : Which parameter in Storage clause will reduce no. of rows per block?

Last Answer : PCTFREE parameter Row size also reduces no of rows per block.

Description : What are the two phases of block coordination?

Last Answer : There are two phases of block coordination: the clear phase and the population phase. During, the clear phase, Oracle Forms navigates internally to the detail block and flushes the obsolete ... with the new master record. These operations are accomplished through the execution of triggers.

Description : What database block size should I use? (for DBA)

Last Answer : Oracle recommends that your database block size match, or be multiples of your operating system block size. One can use smaller block sizes, but the performance cost is significant. Your choice should ... 8K. This is because volume manager products use 8K blocks (and this is not configurable).

Description : How to define Data Block size ?

Last Answer : A data block size is specified for each ORACLE database when the database is created. A database users and allocated free database space in ORACLE datablocks. Block size is specified in INIT.ORA file and can’t be changed latter.

Description : What is Oracle Block? Can two Oracle Blocks have the same address?

Last Answer : Oracle formats the database files into a number of Oracle blocks when they are first created-making it easier for the RDBMS software to manage the files and easier to read data into the memory areas ... at 1. Two blocks can have the same block address if they are in different database files.

Description : What is a join ? Explain the different types of joins ?

Last Answer : Join is a query which retrieves related columns or rows from multiple tables.Self Join - Joining the table with itself.Equi Join - Joining two tables by equating two common columns.Non-Equi Join - ... that query can also retrieve rows that do not have corresponding join value in the other table.

Description : What are the types of visual attribute settings?

Last Answer : Custom Visual attributes Default visual attributes Named Visual attributes. Window

Description : What are the types of SQL Statement ?

Last Answer : Data Definition Language : CREATE,ALTER,DROP,TRUNCATE,REVOKE,NO AUDIT & COMMIT.

Description : How many types of Exceptions are there

Last Answer : There are 2 types of exceptions. They are a) System Exceptions e.g. When no_data_found, When too_many_rows b) User Defined Exceptions e.g. My_exception exception When My_exception then

Description : Give the two types of tables involved in producing a star schema and the type of data they hold.

Last Answer : Fact tables and dimension tables. A fact table contains measurements while dimension tables will contain data that will help describe the fact tables.

Description : What are the different types of segments?

Last Answer : Data segment, index segment, rollback segment and temporary segment.

Description : What are the types of database links?

Last Answer : Private database link, public database link & network database link.

Description : How many types of columns are there and what are they

Last Answer : Formula columns :: For doing mathematical calculations and returning one value Summary Columns :: For doing summary calculations such as summations etc. Place holder Columns :: These columns are useful for storing the value in a variable

Description : What r the types of windows (Window style)?

Last Answer : Specifies whether the window is a Document window or a Dialog window.

Description : How many types of canvases are there.

Last Answer : There are 2 types of canvases called as Content and Stack Canvas. Content canvas is the default and the one that is used mostly for giving the base effect. Its like a plate on which we add items and stacked canvas is used for giving 3 dimensional effect.

Description : What are the types of triggers and how the sequence of firing in text item

Last Answer : Triggers can be classified as Key Triggers, Mouse Triggers ,Navigational Triggers. Key Triggers :: Key Triggers are fired as a result of Key action.e.g :: Key-next-field, Key-up,Key-Down Mouse Triggers :: Mouse ... :: a) pre - text b) when new item c) key-next d) when validate e) post text

Description : How many types of Sql Statements are there in Oracle

Last Answer : There are basically 6 types of sql statments.They are a) Data Defination Language(DDL) :: The DDL statments define and maintain objects and drop objects. b) Data Manipulation Language(DML) :: The DML ... e.g:: Using the Sql Statements in languages such as 'C', Open,Fetch, execute and close

Description : What are the data types allowed in a table ?

Last Answer : CHAR,VARCHAR2,NUMBER,DATE,RAW,LONG and LONG RAW.

Description : What are the different types of PL/SQL program units that can be defined and stored in ORACLE database ?

Last Answer : Procedures and Functions,Packages and Database Triggers.

Description : What is an Exception ? What are types of Exception ?

Last Answer : Exception is the error handling part of PL/SQL block. The types are Predefined and user defined. Some of Predefined exceptions are. CURSOR_ALREADY_OPEN ... INVALID_CURSOR INVALID_NUMBER LOGON_DENIED NOT_LOGGED_ON PROGRAM-ERROR STORAGE_ERROR TIMEOUT_ON_RESOURCE VALUE_ERROR ZERO_DIVIDE OTHERS.

Description : How many types of database triggers can be specified on a table ? What are they ?

Last Answer : Insert Update Delete Before Row o.k. o.k. o.k. After Row o.k. o.k. o.k. Before Statement o.k. o.k. o.k. After Statement o.k. o.k. o.k. If FOR EACH ROW clause is ... for each Row affected by the statement. If WHEN clause is specified, the trigger fires according to the returned Boolean value.

Description : What are the types of canvas-views?

Last Answer : Content View, Stacked View.

Description : Give the Types of modules in a form?

Last Answer : Form Menu Library

Description : What are the different types of windows?

Last Answer : Root window, secondary window.

Description : List the Types of Items?

Last Answer : Text item. Chart item. Check box. Display item. Image item. List item. Radio Group. User Area item.

Description : What are the types of TRIGGERS ?

Last Answer : 1. Navigational Triggers. 2. Transaction Triggers.

Description : What are the different types of Package Procedure ?

Last Answer : 1. Restricted package procedure. 2. Unrestricted package procedure.

Description : What are the different types of key triggers ?

Last Answer : Function Key Key-function Key-others Key-startup

Description : What are the types of Pop-up window ?

Last Answer : the pop-up field editor pop-up list of values pop-up pages. Alert :

Description : What are different types of images?

Last Answer : Boiler plate imagesImage Items

Description : What are the different types of Delete details we can establish in Master-Details?

Last Answer : Cascade Isolate Non-isolate

Description : What are the different types of Delete details we can establish in Master-Details?

Last Answer : Content canvas views Stacked canvas views Horizontal toolbar vertical toolbar.

Description : What are different types of modules available in oracle form?

Last Answer : Form module - a collection of objects and code routines Menu modules - a collection of menus and menu item commands that together make up an application menu library module - a collection of user named procedures, functions and packages that can be called from other modules in the application

Description : What are the three types of user exits available ?

Last Answer : Oracle Precompiler exits, Oracle call interface, NonOracle user exits.